Megasun MGS - CR Service Manual

Thank you for buying this product.Please read this manual carefully to get the best performance from this unit. Please keep this manual carefully.MGS

en104.2 Display channelsDisplay of collector temperatureCOL:Collector temperatureDisplay range: -40...+260 °C-40 ... +500 [°F]Shows the current coll

en11∆T- regulationDT O: Switch-on temperature difference Adjustment range:1.0 ... 50.0 K4.0 K; 90.0 [°Ra]Factory setting: 6.0 K; 12.0 [°Ra]DT F:Switch

en12The antifreeze function activates the loading circuit between the collector and the store when the tempe-rature falls below the adjusted temperatu

en13The thermostat function is deactivated, if the ther-mostat switch-on temperature and the thermostat switch-off temperature are set to an identical

en145 TroubleshootingIf a malfunction occurs, the tool bar symbols will dis-play an error code (see chap. 3.3.2).fuse holderoperating control lampsym

en15Operating control lamp is permanently off.Check the power supply of the controller. Is it disconnected?yesThe fuse of the controller could be blow

en16The solar circuit pump does not work, although the collector is considerably warmer than the store.Operating control lamp of the controller illumi

en176 Accessories6.1 SensorsSensorsThe product range includes high-precision platinum temperature sensors, flatscrew sensors, outdoor tem-perature se

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en2Information about the productProper usageThe solar controller is designed for use in standard solar thermal systems with electric afterheating (im-

en31 OverviewSolar controller for standard solar systems with electric afterheating• Direct connection for electric afterheating• System-Monitoring

en42 Installation2.1 MountingThe unit must only be located in dry interior rooms. It is not suitable for installation in hazardous locations and sho

en52.2 Electrical connectionThe controller is equipped with a change-over relay to which a load such as a pump, a valve, etc. can be connected:10grou

en62.4 Terminal allocationStandard solar system with electric after-heating with one store, one pump and three sen-sors. Sensors S1 / S2 are also us

en73 Operation3.1 ButtonsThe controller is operated via the 3 buttons next to the display.They have the following functions:• Button 1: scrolling

en8The system screen shows the system. The screen con-sists of several system component symbols, which are flashing depending on the current status of

en94 Control parameters and display channels4.1 Channel overviewChannel Designation PageCOL D Temperature collector 10TST D Temperature store base 1